Question # 1

Tick the conservation force:

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Tension in a string

Air resistance string

Elastic spring force

Frictional force

In radio-active decay, the original element which disintegrate to another element is called

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element

daughter element

parent element

none of these

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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Increase

Decrease

May increase or decrease

Remain the same

Significant figures in 0.0010 are

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Four

Three

Two

One

Electron volt is the unit of

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Potential difference

Energy

Resistance

Capacitance

Wave length of that color as compared to that of violet color is:

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Smaller

Longer

Equal

None of these

Time period of a simple pendulum depends upon the

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length of the pendulum

acceleration due to gravity

none of them

both of them

The CRO deflects the beam of electrons, when they passes through uniform

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electric field

gravitational field

magnetic flax

magnetic field

Crystalline solids are in the form of:

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Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

The dot product of electric field intensity E and vector area A is called

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Electric potential

Electric flux

Electric field

Magnetic field

The dimensions of torque is

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[MLT^-2]

[ML²T^-2]

[ML²T^-1]

[MLT]

The speed of commercial jet (air liner) is

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200 ms^-1

267 ms^-1

327 ms^-1

335 ms^-1

The bands below the valence band are

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completely filled and play active part in conduction process

completely filled and plays no part in conduction process

not completely filled and play active part in conduction process

not completely filled and play no part in conduction process

Which of the following radiation will be focused farthest from a convex lens

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X - rays

γ - rays

Microwaves

β - rays

A capacitor is charged with a battery and then it is disconnected A slab of dielectric is now inserted between the plates then

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The charge in the plates reduces and potential difference increase

Potential difference between the plates increases stored energy decreases and charge remains the same

Potential difference between the plates decreases,stored energy decreases and charge remains unchanged

None of the above

For which color of light the refractive index of glass is larger

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Red

Green

Blue

Violet

The direction of torque can be determined by

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Head to tail rule

Right hand rule

Left hand rule

None of these

Shear modulus for lead is

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1.7

4.9

5.6

6.2

A pure semiconductor has:

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An infinite resistance at 0^oC)

A finite resistance which does not depend upon temperature

A finite resistance which decreases with temperature

A finite resistance which increase with temperature

When the radioactive nucleus emits a beta particle, the proton neutron ration:

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increases by one

Remains same

Decreases by one

Decreases by four

A person standing near the track of a fast moving train has tendency to fall towards it because of

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Vibration due to motion of train

Gravitation force of attraction between person and trains

The high speed of train

Some other effect

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